DE2964462D1 - Multiple layer protective glass - Google Patents

Multiple layer protective glass

Info

Publication number
DE2964462D1
DE2964462D1 DE7979850033T DE2964462T DE2964462D1 DE 2964462 D1 DE2964462 D1 DE 2964462D1 DE 7979850033 T DE7979850033 T DE 7979850033T DE 2964462 T DE2964462 T DE 2964462T DE 2964462 D1 DE2964462 D1 DE 2964462D1
Authority
DE
Germany
Prior art keywords
multiple layer
protective glass
layer protective
glass
protective
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE7979850033T
Other languages
German (de)
Inventor
Ake Gunnar Hornell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of DE2964462D1 publication Critical patent/DE2964462D1/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
    • A61F9/06—Masks, shields or hoods for welders
    • A61F9/065—Masks, shields or hoods for welders use of particular optical filters
    • A61F9/067—Masks, shields or hoods for welders use of particular optical filters with variable transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Nonlinear Science (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Liquid Crystal (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Joining Of Glass To Other Materials (AREA)
DE7979850033T 1978-04-24 1979-04-23 Multiple layer protective glass Expired DE2964462D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7804630A SE425048B (en) 1978-04-24 1978-04-24 MULTIPLE GLASS, SEPARATE PROTECTIVE GLASS IN A WELDING SCREEN

Publications (1)

Publication Number Publication Date
DE2964462D1 true DE2964462D1 (en) 1983-02-17

Family

ID=20334712

Family Applications (1)

Application Number Title Priority Date Filing Date
DE7979850033T Expired DE2964462D1 (en) 1978-04-24 1979-04-23 Multiple layer protective glass

Country Status (5)

Country Link
US (1) US4240709A (en)
EP (1) EP0005417B1 (en)
JP (1) JPS554083A (en)
DE (1) DE2964462D1 (en)
SE (1) SE425048B (en)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5689790A (en) * 1979-12-24 1981-07-21 Hosiden Electronics Co Channel display unit
ATE27862T1 (en) * 1982-04-14 1987-07-15 Andre M Eggenschwiler LIGHT PROTECTION FILTERS, PARTICULARLY FOR WELDING SHIELDS OR WELDING GOGGLES.
SE464264B (en) * 1984-02-24 1991-03-25 Esab Ab OPTICAL FILTER FOR WELDING GLASS
EP0236361A1 (en) * 1985-09-06 1987-09-16 Consolidated Technology Pty. Ltd. Method and apparatus for controlling a liquid crystal device
US4759608A (en) * 1985-12-31 1988-07-26 Yang Jong P Automatic liquid crystal light-shutter
US4867536A (en) * 1986-02-05 1989-09-19 Ford Motor Company Color selectable liquid crystal display system
US4918517A (en) * 1989-01-26 1990-04-17 Westinghouse Electric Corp. System and process for video monitoring a welding operation
SE467087B (en) * 1989-06-05 1992-05-25 Hoernell Elektrooptik Ab Welding helmet comes with one kind of quick filter
US5347383A (en) * 1989-06-12 1994-09-13 Osd Envizion Company High speed, low power driving circuit for liquid crystal shutter
US5074647A (en) * 1989-12-07 1991-12-24 Optical Shields, Inc. Liquid crystal lens assembly for eye protection
US5208688A (en) * 1991-02-08 1993-05-04 Osd Envizion Company Eye protection device for welding helmets
US5252817A (en) * 1991-03-25 1993-10-12 Osd Envizion Company Detector system for detecting the occurrence of welding using detector feedback
US5248880A (en) * 1991-03-25 1993-09-28 Osd Envizion Company Detector system for detecting the occurrence of welding
US5751258A (en) * 1991-03-25 1998-05-12 Osd Envizion, Inc. Liquid crystal lens driver electronics for eye protection, high speed shuttering with consistent performance
WO1993013449A1 (en) * 1991-12-26 1993-07-08 Osd Envizion Company Eye protection device for welding helmets and the like
CH687909A5 (en) * 1991-12-31 1997-03-27 Xelux Holding Ag Method for operating an anti-glare device.
GB2263787B (en) * 1992-01-30 1996-01-24 Adco Ind Wear Ltd A multi-layer shield
SI9300226A (en) * 1993-04-29 1994-12-31 Inst Jozef Stefan Process for automatic control of liquid-cristal light transparency modulator for velding goggles
SE502868C2 (en) * 1994-04-26 1996-02-05 Hoernell Elektrooptik Ab Welding quick filter with improved angular properties
SE516183C2 (en) * 1995-10-26 2001-11-26 Hoernell Internat Ab liquid crystal
US7061462B1 (en) 1998-10-26 2006-06-13 Pir Hacek Over S Janez Driving scheme and electronic circuitry for the LCD electrooptical switching element
US7005624B2 (en) * 2000-09-11 2006-02-28 Jackson Products, Inc. Low power phototransistor-based welding helmet providing reduced sensitivity to low intensity light and sharp phototransistor response to high intensity light
US6815652B1 (en) 2000-09-11 2004-11-09 Jackson Products, Inc. Low power phototransistor-based welding helmet providing reduced sensitivity to low intensity light and sharp phototransistor response to high intensity light
US6841772B1 (en) * 2001-05-05 2005-01-11 Jackson Products, Inc. Eye-protection device having dual high voltage switching
US6881939B1 (en) 2001-05-05 2005-04-19 Jackson Products, Inc. Microprocessor based automatically dimmable eye protection device
US20040036821A1 (en) * 2002-08-22 2004-02-26 Optiva, Inc. Liquid crystal shutter
WO2004053586A1 (en) * 2002-12-11 2004-06-24 Optiva, Inc. Liquid crystal shutter
US7008055B2 (en) * 2003-03-19 2006-03-07 Gpt Glendale, Inc. Eye protection methods and apparatus
WO2005017636A2 (en) * 2003-08-11 2005-02-24 Hamilton Thomas J Eye-protection device having dual high voltage switching
US7477330B2 (en) 2005-03-09 2009-01-13 3M Innovative Properties Company Automatic darkening filter with offset polarizers
US20060285330A1 (en) * 2005-06-20 2006-12-21 Ingvar Sundell Automatic darkening filter with automatic power management
US7637622B2 (en) 2005-10-11 2009-12-29 3M Innovative Properties Company Control of an automatic darkening filter
FR2901032B1 (en) * 2006-05-10 2008-09-05 Get Enst Bretagne Groupe Des E FAST SHUTTER WITH DOUBLE SHUTTER REGIME.
EP2156241A1 (en) * 2007-06-08 2010-02-24 Werthmüller, René Self-clearing light-protective device
US9254789B2 (en) * 2008-07-10 2016-02-09 Gentex Corporation Rearview mirror assemblies with anisotropic polymer laminates
GB2498726A (en) 2012-01-25 2013-07-31 3M Innovative Properties Co Automatic welding filter with tunable spectral transmission
US20140168546A1 (en) 2012-12-13 2014-06-19 3M Innovative Properties Company Curved Automatic-Darkening Filter
EP3193797B1 (en) 2014-09-15 2022-05-25 3M Innovative Properties Company Personal protective system tool communication adapter
US10821026B2 (en) * 2016-04-27 2020-11-03 3M Innovative Properties Company Welding protector with magnifying cover
EP3241533A1 (en) 2016-05-04 2017-11-08 3M Innovative Properties Company A curved eye protection shield for welding protection
US20190258111A1 (en) 2016-11-08 2019-08-22 3M Innovative Properties Company Flat Automatic Darkening Filter And Welding Protector
EP3320880A1 (en) 2016-11-11 2018-05-16 3M Innovative Properties Company An automatic darkening filter assembly for a welding protector and a welding protector
EP3741333A1 (en) 2019-05-23 2020-11-25 3M Innovative Properties Company Darkening filter comprising a non-uniform pattern of switchable shutters
EP3767378A1 (en) 2019-07-19 2021-01-20 3M Innovative Properties Company Automatic darkening filter with simplified set-up

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873804A (en) * 1972-04-14 1975-03-25 Mack Gordon Welding helmet with eye piece control
JPS49123641A (en) * 1973-03-30 1974-11-26
US3890628A (en) * 1973-10-23 1975-06-17 Motorola Inc Liquid crystal light control device and circuit
JPS5435780B2 (en) * 1974-07-23 1979-11-05
DE7538264U (en) * 1974-12-02 1977-09-22 Revue Thommen Ag, Waldenburg (Schweiz) LIGHT PROTECTION FILTER
CH585415A5 (en) * 1975-05-16 1977-02-28 Bbc Brown Boveri & Cie
US4039254A (en) * 1976-05-27 1977-08-02 Mack Gordon Electro-optic welding lens assembly using multiple liquid crystal light shutters and polarizers
FR2358676A1 (en) * 1976-07-13 1978-02-10 Labo Electronique Physique INFORMATION DISPLAY DEVICE CONTAINING A LIQUID CRYSTAL CELL

Also Published As

Publication number Publication date
SE7804630L (en) 1979-10-25
JPS6231329B2 (en) 1987-07-08
US4240709A (en) 1980-12-23
JPS554083A (en) 1980-01-12
EP0005417A1 (en) 1979-11-14
EP0005417B1 (en) 1983-01-12
SE425048B (en) 1982-08-30

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Legal Events

Date Code Title Description
8328 Change in the person/name/address of the agent

Free format text: TUERK, D., DIPL.-CHEM. DR.RER.NAT. GILLE, C., DIPL.-ING., PAT.-ANW., 4000 DUESSELDORF

8339 Ceased/non-payment of the annual fee